6 results about "Sinonovacula" patented technology

The application discloses a Sinonovacula constricta glycoprotein nano-enzyme Sc-NZ and a preparation method thereof, and particularly relates to the technical field of nano-enzymes. The Sinonovacula constricta glycoprotein nano-enzyme Sc-NZ is a cluster-shaped nanoparticle obtained by treating a product separated and purified from Sinonovacula constricta under ultrahigh pressure, and the particle size distribution is 30-50 nm. The preparation method comprises the following steps: taking soft body tissue of Sinonovacula constricta, homogenizing and defatting, centrifuging to collect the precipitate to obtain defatted powder, extracting the defatted powder by an alkali extraction and alcohol precipitation method, adjusting the pH to 4.0-5.0, collecting and drying the precipitate to obtain a crude glycoprotein; subjecting the crude glycoprotein to enzymolysis, and then sequentially subjecting the glycoprotein to anion exchange chromatography and gel filtration chromatography to collect an active component to obtain a Sinonovacula constricta natural glycoprotein; adding deionized water or a phosphate buffer to the Sinonovacula constricta natural glycoprotein to prepare a solution, and placing the solution in an ultrahigh pressure device to obtain the Sinonovacula constricta glycoprotein nano-enzyme Sc-NZ. The Sinonovacula constricta glycoprotein nano-enzyme Sc-NZ has the advantages of being prepared by green physical modification, high activity, high stability and multifunction.

According to the industrial culture method for the sinonovacula constricta in the high-temperature period, the illumination condition of the sinonovacula constricta is changed into low-intensity yellow light, so that the high-temperature stress of the sinonovacula constricta is greatly relieved, the growth speed and the survival rate of the sinonovacula constricta are remarkably increased, and the sinonovacula constricta is better in nutrition and meat quality; in addition, after sea mud is replaced with glass sand as a culture substrate, the cultured sinonovacula constricta is bright yellow in color and luster, and the selling price can be greatly increased. Moreover, high-temperature-resistant microalgae separated from a seawater pond in summer is selected as bait, and ethephon and spermidine are added into the culture medium, so that the high-temperature tolerance of the microalgae is further improved, and stable supply of the bait for the juvenile sinonovacula constricta in the high-temperature period is guaranteed.

The application discloses a kind of sinonovacula constricta picking and cleaning device for intertidal operation and method thereof, belong to aquaculture machinery technical field.The device includes the carrier plate for being installed on mobile carrier;Carrier plate front end is equipped with conveying device, conveying device top is equipped with the cleaning device for washing sinonovacula constricta sludge, conveying device inside is integrated with the vibration device for strengthening sinonovacula constricta cleaning effect;Conveying device front end is equipped with excavating device by adjusting module, and the working posture of excavating device can be changed by adjusting module.The invention uses tooth-shaped flat shovel to shovel sinonovacula constricta together with a certain thickness of mud, effectively reduces the hard contact between excavating device and sinonovacula constricta, and the mud wrapped on the surface of sinonovacula constricta also plays a protective role for sinonovacula constricta, reduces the risk of damage to sinonovacula constricta during picking, and also considers the picking efficiency of sinonovacula constricta.

The application discloses a rear support type Sinonovacula constricta layered harvesting machine and a harvesting method thereof. In the application, a tractor drives a traction frame to advance, both ends of conveying shaft one and conveying shaft two in a mud discharging mechanism are connected with a mud discharging frame to form a rotary pair, and helical blades one and helical blades two are fixed on the conveying shaft one and the conveying shaft two; a scraper assembly is arranged at the back of the mud discharging mechanism, a rotary shaft and a connecting rod in the scraper assembly form a rotary pair, a plurality of arc-shaped scrapers one and a plurality of arc-shaped scrapers two which are uniformly distributed and staggered are fixed on the rotary shaft; a flushing and screening assembly is arranged at the back of the scraper assembly; a plurality of conveying frames are arranged on a chain one of a chain transmission mechanism two in a conveying and collecting mechanism; an inclined plate one end in a guide assembly is hinged to the traction frame, and the other end is in contact with a cam fixed on a rotary shaft; a collecting frame is arranged at the end of the inclined plate away from the cam. The application can realize layered digging and collecting of Sinonovacula constricta, reduce damage to the whole machine, reduce energy consumption and improve harvesting efficiency.

The invention provides a quality detection method and system for sinonovacula constricta samples in different producing areas under control variables, and relates to the technical field of data processing.The method comprises the steps that on the basis of traceability information of different producing areas, representative sinonovacula constricta living samples are collected respectively, fishing time window synchronization control is carried out on the samples in all the producing areas, and the samples in all the producing areas are obtained; carrying out purification treatment in an environment with standardized temperature, salinity and temporary rearing duration, and executing unified cleaning, shelling and tissue separation pretreatment operation to obtain a variable-controlled standardized sample; and performing morphological and textural analysis on the standardized sample to obtain physical index data including individual specifications, shell surface color characteristics, shell meat mass ratio and muscle elasticity modulus. Accurate quality detection and production area traceability of sinonovacula constricta in different production areas under control variables can be realized.

This invention provides a method for assessing the ammonia nitrogen tolerance of razor clams using infrared heart rate measurement, comprising the following steps: S1: Raising and acclimatizing the razor clams to be tested under established acclimatization conditions to adapt them to the experimental environment; S2: Preparing the connection of the heart rate detection device before the assessment; S3: Using the acclimatized razor clams from step S1 for heart rate measurement to obtain an electrocardiogram (ECG); S4: Placing the razor clams with the sensor attached in a temporary holding tank filled with seawater to acclimatize them to the testing environment; S5: Adding ammonia nitrogen stock solution multiple times to the temporary holding tank and measuring the ECG, plotting a scatter plot, performing regression and curve fitting analysis, obtaining the corresponding curve equations, and solving the equations simultaneously to calculate the x-coordinate value of the intersection point, which is the required inflection point ammonia nitrogen concentration (BPAN) value, thus completing the determination of the ammonia nitrogen tolerance of razor clams. This invention solves the problems of high cost, low accuracy, and low intuitiveness and sensitivity in existing technologies for assessing ammonia nitrogen tolerance in razor clams.